Reducing metal to a molten state suitable for casting.



, W. s. BR1AN. REDUGING METAL TO A MOL'IEN STATE SUITABLE FOB. CASTING;

APPLICATION FILED` FBB.10, 1908.

Patented Ju1y 19, 191C i l 1 L I N I/E N T 0R Allarney WITESTES M w operon Winternet saune antan', or unanime, rnimzesenn.

Specification ofetters Patent. 4 Pggented Jly'lfi, 1910.,

application filed February w, i908. Serial No. 415,209.

hereby the ifoiiowinp; to be a uli, cheer, act ption ot' the invention, auch 'li enable o-theiis siriiieti in the art t" which it appertains to .maire and use 'the saine.

lair in eni'ion' relates to means :tor reducing inetai to a moiten state suitable for cast.

i,ng,-- tho provid-c ap reqiuring et the inv ntion being to ,tue by menne of which rnetai igor its reduction-to a molten state, can ne c icing bio/aunt to a "vif ,2. ,f

conoieon eunaoiy along-L, castinge which ehalibe eniooth and ready to assembie'when cooieti, Without the n :essity of extensive finishing' oper. .tion ,Y

y A. further to so construct the apparatus ti.

e ioriehverino h ie cost. i

View the invention consists in n Jaurea conf struction ano nnii'iations of parte ae hereinafter iforth pointed out' in the ciairns,

The accompanH `View i venti is a sectional ring; my

i iacint provided with e ducting; inateriai lol-ci when, the appa- 'Y y of a cL ate Y :c 'utrance for nietai ie 5- iooateti Within l Witi'i heat by means This gaten' to be niei c i i the furnace ano burners e. inquiet or gaseous fuel may to the burners ,urce of euppiy through be empio", from any7 en a pipe 2' pz rough 'the bottoni of the furnace y packed to prevent the escape of air from *be furnace chamber. A valveri pipe S employed for supplyinp; s n support combus *i f 'ti using liquid nstead or U ,y cibie may be heated by suitai ie eier: ing means.

Ylibe crucible 5 is provided with an outlet spout 9 which unninunicates with the eruthe latter andex- ,iinefi or diagonal fuel cibie bottoni tende upu/aroiy in an n:

.for casting the same. A strong jacket 1].

is secured to the furnace Wall and embraces the nonzled end of the spout 9. The spout 9 should be of euiiicient height to cause the level of molten metal therein to be inside the furnace wail when the pressure which is e1n `pioyed to 'force the molten metal through Said spout, shall have been removed.

in air pipe l2 communicates with the top of the furnace chamber over the open, top of the cruciioie and through this pi e, air is forced under considerable ressure y means of any suitable pump or an: compressor.

Normally `the air pressure Within the furnace chamber will be uniform throughout saine. .Vihen the metal contained in the Crucible shall have been reduced to a moiten condition, the .air pressure Within the furnace chamberwvill be increased bythe air forced into the same through the pipe 1Q, and the molten metal, seeking the path of leastresistance Will iiow through the spout 9., being iorced to do sosoy the pressure upon the body of the metal in the crucible. The molten metal thus caused to fiow. through the spout 9 will be emitted at the nozzle 1'() 'to the moid,-the latter being supported by any suitable ineens in position at said nozzle. As soon as the air pressure from the pipe l2 is cioser and the pressure Within. the :furnace chamber reduced to or approximately to the normal, any molten inetai which may at that time be in the upper portion of the nozzle, Wili new bach and become disposed Within that portion of the spout located in the furnace chamber, thus preventing the cooling of metal Within the nozzle portion of theA spout and the consequent clogging ofthe saineu Havingi'uiiy described my invention what il ciaim as new' and desire to secure by Letf ters-Patent, is*

l. in an apparatus of thecharacter described, .the combination of a furnace chainber'anda Crucible located therein, said crucibie having its upper end openrwithin said furnace chamber, 'means for conducting inoiten metal from saiderucible to the ex# terior of the furnace chamber and means for admitting Huid under pressure into said fur'- nace chamber to torce the molt/en. metal to y iow from said crucible through Said conducting means.

2. In an apparatus of the character described, the combination of a furnace chamber, :I Crucible therein, saidfcrucible having` its top open Within the furnace chamber, a

normally closef gateway in the top of the furnace chamber over the Crucible for admitting metal to the Crucible, a spout communicating with the lower portion of the Crucible and projecting through the Wall of the furnace chamber, and a pipe communieating with the furnace chamber over the 

